Auto-grading decade-old Hacker News discussions with hindsight

It's fun to read some of these historic comments! A while back I wrote a replay system to better capture how discussions evolved at the time of these historic threads. Here's Karpathy's list from his graded articles, in the replay visualizer:

Swift is Open Source https://hn.unlurker.com/replay?item=10669891

Launch of Figma, a collaborative interface design tool https://hn.unlurker.com/replay?item=10685407

Introducing OpenAI https://hn.unlurker.com/replay?item=10720176

The first person to hack the iPhone is building a self-driving car https://hn.unlurker.com/replay?item=10744206

SpaceX launch webcast: Orbcomm-2 Mission [video] https://hn.unlurker.com/replay?item=10774865

At Theranos, Many Strategies and Snags https://hn.unlurker.com/replay?item=10799261

I'd love to see sentiment analysis done based on time of day. I'm sure it's largely time zone differences, but I see a large variance in the types of opinions posted to hn in the morning versus the evening and I'd be curious to see it quantified.